/*****************************************************************************\
* Copyright (c) 2002-2004 Pelle Johansson.                                    *
* All rights reserved.                                                        *
*                                                                             *
* This file is part of the moftpd package. Use and distribution of            *
* this software is governed by the terms in the file LICENCE, which           *
* should have come with this package.                                         *
\*****************************************************************************/

/* $moftpd: memory.h 1251 2005-03-06 22:24:29Z morth $ */

#ifndef _MEMORY_H
#define _MEMORY_H

enum
{
  pNextParent = 0, pNextChild, pParent, pChild,
#ifdef MEMORY_LOCATION
  pLocation,
#endif
  pNumLinkLinks,
  pNextTemp = 0, pNumTempLinks
};

struct memdata;
struct memhash;

typedef union memory
{
  union memory *link;
  struct memdata *data;
  struct memhash *hash;
  void **loc;
} memory_t;

typedef struct memdata
{
  memory_t firstParent, firstChild;
  void (*deallocator)(void *ptr);
  struct memdata *next;
  unsigned int isHashed:1, mark:1;
} memdata_t;

typedef struct memhash
{
  memdata_t **bucket;
  memdata_t *next;
} memhash_t;

void mem_init (void);

void *talloc(size_t sz);
void *trealloc(void *ptr, size_t sz);
void tfree_all(void);

char *tstring(const char *str);

void *palloc(size_t sz, void *parent, void (*deallocator)(void *ptr)
#ifdef MEMORY_LOCATION
      , void **loc
#endif
      );
void *prealloc(void *ptr, size_t sz);
void *pattach(void *child, void *parent
#ifdef MEMORY_LOCATION
      , void **loc
#endif
      );
void *padopt(void *child, void *oldparent, void *newparent
#ifdef MEMORY_LOCATION
      , void **newloc
#endif
      );
void *prootify (void *ptr);
void pfree(void *child, void *parent);

void *pchild(const void *parent, const void *prevChild);
int plinked (const void *child, const void *parent);
int pnparents (const void *child);

void *proot(
#ifdef MEMORY_LOCATION
      void **loc
#else
      void
#endif
      );
char *pstring(const char *str, void *parent
#ifdef MEMORY_LOCATION
      void **loc
#endif
      );

#endif /*_MEMORY_H*/